Skip to main content
. Author manuscript; available in PMC: 2010 Dec 1.
Published in final edited form as: Appl Geochem. 2009 Dec 1;42(12):2234–2245. doi: 10.1016/j.apgeochem.2009.09.010

Figure 6.

Figure 6

Formation of Pb-oxalate from plumbojarosite dissolution during the sequential extraction. Lead LIII edge EXAFS spectra of tailings samples after they have been subjected to high temperature, acid ammonium oxalate extraction (AAO80°C). Data are shown in solid lines and the linear combination fits (LCFs) using just two references (plumbojarosite and Pb-oxalate) are shown in dashed lines. Reference spectra are shown in bold with their mathematical reconstructions (dashed lines) from target transfer analysis, which was used to determine the suitability of the reference spectra for use in LCF.